oak_deploy's Introduction

oak on Deploy Example

This is just a basic example of oak running on Deno Deploy. It simply echos back the body it was sent in the response to the client. The app is deployed on (oak-deploy-example.deno.dev)[https://oak-deploy-example.deno.dev].

The URL https://github.com/kitsonk/echoServer.ts is what gets deployed, and that is it, and every time I push to the GitHub repo, Deno Deploy will redeploy my application. 🪄

I added these 3 lines to the top so that when I was editing the main module, I was getting the proper intellisense with the Deno Language Server in my IDE:

/// <reference path="https://raw.githubusercontent.com/denoland/deployctl/main/types/deploy.fetchevent.d.ts" />
/// <reference path="https://raw.githubusercontent.com/denoland/deployctl/main/types/deploy.ns.d.ts" />
/// <reference path="https://raw.githubusercontent.com/denoland/deployctl/main/types/deploy.window.d.ts" />

Importing oak, just like in the Deno CLI, is super straight forward:

import { Application } from "https://deno.land/x/[email protected]/mod.ts";

Yup, it is that simple!

If you are familiar with oak (or Express or Koa), you would normally expect an app.listen(), but Deno Deploy deals with all the listening for you, so the app only needs to handle the FetchEvents, so what we do is:

addEventListener("fetch", app.fetchEventHandler());

This will have Deno Deploy send FetchEvents into our handler, and for each event, the middleware will be invoked and the response sent to the client.

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Errors when running locally

Thanks for the demo project! I was trying it out and wanted to run it locally but am running into errors.

Versions

deno --version
deno 1.9.0 (release, x86_64-apple-darwin)
v8 9.1.269.5
typescript 4.2.2

deployctl --versions                 
deployctl 0.2.0

When I run deployctl run --watch ./echoServer.ts

oak_deploy git:(main) ✗ deployctl run --watch ./echoServer.ts
Check file:///Users/jrai/git/oak_deploy/$deno$eval.ts
error: TS2339 [ERROR]: Property 'cwd' does not exist on type 'typeof Deno'.
      path = Deno.cwd();
                  ~~~
    at https://deno.land/[email protected]/path/win32.ts:43:19

TS2339 [ERROR]: Property 'cwd' does not exist on type 'typeof Deno'.
      path = Deno.env.get(`=${resolvedDevice}`) || Deno.cwd();
                                                        ~~~
    at https://deno.land/[email protected]/path/win32.ts:53:57

TS2339 [ERROR]: Property 'cwd' does not exist on type 'typeof Deno'.
      path = Deno.cwd();
                  ~~~
    at https://deno.land/[email protected]/path/posix.ts:36:19

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
  async readFrom(r: Deno.Reader): Promise<number> {
                         ~~~~~~
    at https://deno.land/[email protected]/io/buffer.ts:207:26

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'ReaderSync'.
  readFromSync(r: Deno.ReaderSync): number {
                       ~~~~~~~~~~
    at https://deno.land/[email protected]/io/buffer.ts:237:24

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
export async function readAll(r: Deno.Reader): Promise<Uint8Array> {
                                      ~~~~~~
    at https://deno.land/[email protected]/io/util.ts:25:39

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'ReaderSync'.
export function readAllSync(r: Deno.ReaderSync): Uint8Array {
                                    ~~~~~~~~~~
    at https://deno.land/[email protected]/io/util.ts:50:37

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Writer'.
export async function writeAll(w: Deno.Writer, arr: Uint8Array) {
                                       ~~~~~~
    at https://deno.land/[email protected]/io/util.ts:76:40

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'WriterSync'.
export function writeAllSync(w: Deno.WriterSync, arr: Uint8Array): void {
                                     ~~~~~~~~~~
    at https://deno.land/[email protected]/io/util.ts:104:38

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
  r: Deno.Reader,
          ~~~~~~
    at https://deno.land/[email protected]/io/util.ts:141:11

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'ReaderSync'.
  r: Deno.ReaderSync,
          ~~~~~~~~~~
    at https://deno.land/[email protected]/io/util.ts:188:11

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
type Reader = Deno.Reader;
                   ~~~~~~
    at https://deno.land/[email protected]/io/bufio.ts:7:20

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Writer'.
type Writer = Deno.Writer;
                   ~~~~~~
    at https://deno.land/[email protected]/io/bufio.ts:8:20

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'WriterSync'.
type WriterSync = Deno.WriterSync;
                       ~~~~~~~~~~
    at https://deno.land/[email protected]/io/bufio.ts:9:24

TS2304 [ERROR]: Cannot find name 'setTimeout'.
    setTimeout((): void => {
    ~~~~~~~~~~
    at https://deno.land/[email protected]/async/delay.ts:5:5

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
      throw new Deno.errors.UnexpectedEof();
                     ~~~~~~
    at https://deno.land/[email protected]/textproto/mod.ts:73:22

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
      throw new Deno.errors.InvalidData(
                     ~~~~~~
    at https://deno.land/[email protected]/textproto/mod.ts:75:22

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
      if (kv === null) throw new Deno.errors.UnexpectedEof();
                                      ~~~~~~
    at https://deno.land/[email protected]/textproto/mod.ts:82:39

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
        throw new Deno.errors.InvalidData(
                       ~~~~~~
    at https://deno.land/[email protected]/textproto/mod.ts:88:24

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
export function emptyReader(): Deno.Reader {
                                    ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:11:37

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
export function bodyReader(contentLength: number, r: BufReader): Deno.Reader {
                                                                      ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:19:71

TS2694 [ERROR]: Namespace 'Deno' has no exported member 'Reader'.
export function chunkedBodyReader(h: Headers, r: BufReader): Deno.Reader {
                                                                  ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:41:67

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
          throw new Deno.errors.UnexpectedEof();
                         ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:63:26

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
    if (line === null) throw new Deno.errors.UnexpectedEof();
                                      ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:69:39

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
      throw new Deno.errors.InvalidData("Invalid chunk size");
                     ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:74:22

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
          throw new Deno.errors.UnexpectedEof();
                         ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:80:26

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
          throw new Deno.errors.UnexpectedEof();
                         ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:85:26

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
          throw new Deno.errors.UnexpectedEof();
                         ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:97:26

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
          throw new Deno.errors.UnexpectedEof();
                         ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:101:26

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
        throw new Deno.errors.UnexpectedEof();
                       ~~~~~~
    at https://deno.land/[email protected]/http/_io.ts:109:24

TS2339 [ERROR]: Property 'errors' does not exist on type 'typeof Deno'.
    throw new Deno.errors.InvalidData("Missing trailer header.");
                   ~~~~~~
...
Found 188 errors.

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Errors when running locally

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